here is my solution to this question
i second VietDao29's idea!
here is my solution to this question!
my english is poor,so i don't discribe how i do it!
i think you can get a idea about it and understand the equations i make!
i want to make friends with you all
it is helpful to...
I second Brad Barker's suggestion.
i major in physics! i think math is useful to all the students,
my english is poor,i cannt express myself freely,but i want to help you!
i want to make friends to you all,